Look at how his acted toward the folks who kidnapped Amy...
Oh, that's new. Never been angry before.
I sort of chalk that up to never having been that emotionally invested in his companions like that before. It's sort of like the reaction he had during The Idiot's Lantern, after Rose's face was 'stolen':
The Doctor: The street. They left her in the street. They took her face, and just chucked her out and left her in the street. And as a result, that makes things... simple. Very very simple. Do you know why?
Det. Inspector Bishop: No...
The Doctor: Because now, Detective Inspector Bishop, there is no power on this earth that can stop me!
I see it as a continuation of that, except this time it's his fault. The Wire was not down to him, but the whole thing with Madame Kovarian, the Silence, the whole fact they had kidnapped Amy, the whole Melody Pond setup was solely because of how dangerous he is.
That's really the one colossal difference between Tennant and Smith's Doctors... Ten ran round the universe, seeing what there is to see. He encountered things that he didn't like, and he dealt with them. But mostly it was a reactionary thing.
Eleven on the other hand is a little less reactive and a lot more proactive, and mostly that's down to the fact that he feels responsible. He feels responsible for everything that's happened - because he *is* responsible. It weighs heavily on his mind, and a lot of the nervous energy is overcompensating.
or the ships who tried to put him in the pandora box.
"Your voice is different, but the arrogance is unchanged." - Davros, The Stolen Earth.
Eleven is clever, probably cleverer than Ten was, if that makes sense. He sees the plan beyond the plan, except not the plan behind that. The entire Pandorica setup was a very clever trap, but it was so well designed that he didn't realise it was a trap until it was too late, mostly because of his arrogant insistence that the Pandorica was a myth.
The way he dismissed the Alliance was mostly to buy time to actually get to examine the Pandorica, not to actually make them go away - he knew full well it would merely buy time, "That should keep them squabbling for half an hour", not realising they were all there together anyway.
In reality that's just feeding into his ego, and under other circumstances he might have realised it was a little too easy to make that happen.